President Donald Trump accused Prime Minister Trudeau of acting "meek and mild" during meetings at the G7 Summit, only to attack the U.S. at a news conference.

Heyman said Trump's tweets and protectionist about-face could and force Canada to look for trade partners beyond the USA, noting Canada's trade frameworks with Europe and Asia.

The meeting of world leaders in Canada ended in disarray after the US President retracted his support for their agreed communiqué and then criticised Canadian prime minister Justin Trudeau on social media.

He said of his decision to impose new tariffs, "I have made it very clear to the president that it is not something we relish doing".

Please tell Prime Minister Trudeau and President Macron that they are charging the US massive tariffs and create non-monetary barriers.

Trudeau on Saturday said the U.S., Canada, Britain, France, Germany, Italy and Japan figured out "consensus language" they could all agree to.

As he flew from Canada to Singapore on Saturday night, Mr Trump displayed his ire via Twitter, which he also employed to insult Mr Trudeau as "dishonest" and "weak". Mexico, Canada, China and others have treated them unfairly.

Trump pulled out of endorsing a joint communique after the G7 meet finished on Saturday with the USA president accusing Trudeau, the summit's chairman, of dishonesty. "Our Tariffs are in response to his of 270% on dairy".

Since Trump's election in 2016, Trudeau has tried to take a conciliatory approach to the populist Republican president and has been careful never to run him down in public.

"He held a press conference and he said the U.S.is insulting".

She said that the European countries will not be "taken advantage of" in terms of trade and that they would "act" against the US trade measures, which are considered as going against the World Trade Organization's rules.

"Since World War II, we've had a number of allies around the world, and they are especially represented at the G-7", Udall said. He said Canada has to stand up for itself. During the press conference, Trudeau called the meeting a success but pledged to retaliate against American tariffs.

President Trump arrived in Singapore on Sunday evening. "This I've never seen before, nor has anyone else", Mulroney said.

And Americans are practically apologizing on behalf of their president.

Trump goes to bat for Putin at the G-7, saying Russian Federation should be let back in, and he is giddy with excitement for a first-ever meeting with Kim John Un that will only legitimize the hermit strong man.

Kudlow, in a separate TV appearance, said Trudeau was "polarizing" and "really kind of stabbed us in the back".